Airtac SAI125 Standard Air Cylinder SAI125AX200S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX200S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 200mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke200 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX200S
The AirTAC SAI125X200-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It delivers a substantial push force of 6136 N and pull force of 5734 N at 0.5 MPa, making it well-suited for high-thrust tasks requiring a 200 mm stroke. The extruded aluminum barrel omits tie-rods, providing a clean exterior that resists debris accumulation.
This specific configuration includes a piston magnet for proximity sensing, directly supporting CMSE and DMSE switches within the barrel's dual-sided sensor grooves. It is built with an SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes PT tapered port threads to ensure a reliable, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125AX200S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX200S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI125 Standard Air Cylinder SAI125AX200S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×200 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAI125 Standard Air Cylinder SAI125AX200S Is Used
Heavy Stamping Presses
Provides the robust 6136 N push force required to actuate heavy stamping and forming presses, with adjustable air cushions absorbing the high kinetic energy at the 200 mm stroke end.
Large Material Lifters
Ideal for lifting substantial material bundles or heavy pallets on automated lines, where the -S magnet and dual sensor grooves allow precise end-of-stroke position verification.
Industrial Carton Forming
Drives large-scale packaging machinery, utilizing the corrosion-resistant SUS420J2 rod to withstand washdown environments while executing 200 mm folding and forming cycles.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX200S the Right Cylinder?
Selecting this 125 mm bore cylinder is optimal when an application demands over 6000 N of force at 0.5 MPa, bridging the gap between the 100 mm bore (3927 N) and the massive 160 mm bore (10053 N). Because this is a 200 mm stroke, maintaining strict alignment is critical to prevent premature rod-bearing wear; utilizing external guide rails or a guided cylinder mechanism is highly recommended to absorb any lateral loads.
As a genuine ISO 15552 profile cylinder, it serves as a direct dimensional drop-in replacement for other ISO 15552 standard cylinders. To complete your assembly, pair it with a TC trunnion mount, confirm the G1/2 port size, and leverage the built-in magnet with CMSE switches. Note that the adjustable air cushions only decelerate the piston at stroke end; if the machine loses air pressure, the load will drop unless you employ the SAIL variant with a pneumatic lock or an external rod lock.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAI125 Standard Air Cylinder SAI125AX200S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder generates a push force of 6136 N and a pull force of 5734 N. If pressure is increased to 0.7 MPa, the push force reaches 8590 N.
Yes, the SAI125X200-S is a genuine ISO 15552 profile cylinder, meaning its mounting interface and envelope dimensions are interchangeable with other ISO 15552 standard cylinders. It uses a G1/2 port and supports PT tapered threading.
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